Synthese und reaktionen einiger 1R,1R′,2,3,4,5-tetraphenyl-1-germacyclopentadiene
作者:Peter Jutzi、Alfons Karl
DOI:10.1016/s0022-328x(00)84612-4
日期:1981.7
The synthesis of some new 1R,1R′,2,3,4,5-tetraphenyl-1-germacyclopentadienes is described (R = R′ = ethyl (II), p-tolyl (III), p-dimethylaminophenyl (dap) (IV), pentafluorophenyl (V); R = Cl, R′ = p-tolyl (VI), dap (VII); R = H, R′ = p-tolyl (VIII), dap (IX)). The germanes VIII, IX, X (R′ = phenyl) and XV (R′ = H) react with n-butyllithium in the presence of trimethylchlorosilane nearly quantitatively
描述了一些新的1R,1R',2,3,4,5-四苯基-1-锗环戊二烯的合成(R = R'=乙基(II),对甲苯基(III),对二甲基氨基苯基(dap)( IV),五氟苯基(V); R = Cl,R'=对甲苯基(VI),dap(VII); R = H,R'=对甲苯基(VIII),dap(IX))。在三甲基氯硅烷存在下,锗烷VIII,IX,X(R'=苯基)和XV(R'= H)与正丁基锂几乎定量地反应为甲硅烷基化的化合物XI,XII,XIII和XVI。结果表明,即使在-78℃下,中间的1-锂-1-锗环戊二烯也是不稳定的。